JTAG debug mechanism
LeoLi at freescale.com
Fri Aug 13 15:44:43 EST 2004
I know this question is off topic, but I can't find a better place to ask. I will be grateful if anyone can give me a hint or direct me to a reference.
As we know PowerPC use JTAG to debug CPU, which implements a Boundary-Scan mechanism. It can manipulate any input/output signals of the CPU by a serial shift/scan process. But my question is how it can read/write the core registers and system memory as implemented by most JTAG emulators.
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